Migomag MOMACDC User manual

Migomag ACDC 200 TIG Inverter
Part Number: MOMACDC
Operators Manual
MIGOMAG
ACDC 200
INVERTER

Migomag Welding Supplies
Your Welding Industrial Specialist
668 Somerville Road, Sunshine VIC 3020
03 9313 3100
inf[email protected]
www.migomag.com.au
A division of Wesfarmers Industrial & Safety
Record the following informaon for Warranty purposes:
Where Purchased: ______________________________________________________
Purchase Date: _________________________________________________________
Equipment Serial #: _____________________________________________________
THANK YOU FOR YOUR BUSINESS!
Congratulaons on your new MIGOMAG MACHINE. We are proud to have you as our
customer and will strive to provide you with the best service and reliability in the welding
industry. This product is backed by our extensive warranty.
To locate your nearest distributor or Repair agent please call +03 9313 3100, or visit us on
the web at www.migomag.com.au.
This Operang Manual has been designed to instruct you on the correct use and operaon
of your Migomag Welder. Your sasfacon with this product and its safe operaon is our
ulmate concern. Therefore please take the me to read the enre manual, especially
the Safety Precauons. They will help you to avoid potenal hazards that may exist when
working with this product.
Migomag your Welding Industrial Specialist - we are the right choice for all your welding
needs.
Migomag are one of the Market Leaders of Arc Welding Products for your welding needs
from Light industrial to Heavy industrial.

Table of Contents
Secon Page
General Safety Rules 1
Receiving 6
Descripon 6
Unpacking 6
Specicaons 7
Know your Welder 9
Front Control Panel 10
Installaon 11
Operaon 13
Troubleshoong Chart 29
Spare Part Diagram 31
Spare Part List 32
Maintenance, Transportaon and Storage 33
Hazard Warnings 33
Warranty 34
Terms & Condions 35
Migomag TIG Torch 37

Operators Manual
1
General Safety Rules
WARNING: Read and understand all instrucons. Failure to follow all instrucons listed
below may result in serious injury.
CAUTION: Do not allow persons to operate or assemble this MOM ACDC 200 unl they
have read this manual and have developed a thorough understanding of how the MOM
ACDC 200 works.
WARNING: The warnings, cauons, and instrucons discussed in this instrucon manual
cannot cover all possible condions or situaons that could occur. It must be understood
by the operator that common sense and cauon are factors which cannot be built into
this product, but must be supplied by the operator.
1. Your Welding Environment
• The welding machine is not suitable for use in rain
• Keep the environment you will be welding in free from ammable materials
• Always keep a re exnguisher accessible to your welding environment
• Always have a qualied person install and operate this equipment
• Make sure the area is clean, dry and venlated. Do not operate the welder in humid,
wet or poorly venlated areas
• Always have your welder maintained by a qualied technician in accordance with local,
state and naonal codes
• Always be aware of your work environment. Be sure to keep other people, especially
children, away from you while welding
• Keep harmful arc rays shielded from the view of others
• Mount the welder on a secure bench or cart that will keep the welder secure and
prevent it from pping over or falling
2. Your Welder’s Condion
• Check ground cable, power cord and welding cable to be sure the insulaon is not
damaged. Always replace or repair damaged components before using the welder
• Check all components to ensure they are clean and in good operang condion before
use
3. Use of Your Welder
CAUTION! Do not operate the welder if the output cable, electrode, torch, wire or wire
feed system is wet. Do not immerse them in water. These components and the welder
must be completely dry before aempng to use them.
• Follow the instrucons in this manual
• Keep welder in the o posion when not in use
• Connect ground lead as close to the area being welded as possible to ensure a good
ground

Migomag ACDC 200
Model No MOMACDC 2
• Do not allow any body part to come in contact with the welding wire if you are in
contact with the material being welded, ground or electrode from another welder
• Do not weld if you are in an awkward posion. Always have a secure stance while
welding to prevent accidents. Wear a safety harness if working above ground
• Do not drape cables over or around your body
• Wear a full coverage helmet with appropriate shade (see ANSI Z87.1 safety standard)
and safety glasses while welding
• Wear proper gloves and protecve clothing to prevent your skin from being exposed to
hot metals, UV and IR rays
• Do not overuse or overheat your welder. Allow proper cooling me between duty
cycles
• Keep hands and ngers away from moving parts and stay away from the drive rolls
• Do not point torch at any body part of yourself or anyone else
• Always use this welder in the rated duty cycle to prevent excessive heat and failure
4. Specic Areas of Danger, Cauon or Warning
Electrical Shock
WARNING! Electric arc welders can produce a shock that can cause injury or death.
Touching electrically live parts can cause fatal shocks and severe burns. While welding, all
metal components connected to the wire are electrically hot. Poor ground connecons
are a hazard, so secure the ground lead before welding.
• Wear dry protecve apparel: coat, shirt, gloves and insulated footwear
• Insulate yourself from the work piece. Avoid contacng the work piece or ground
• Do not aempt to repair or maintain the welder while the power is on
• Inspect all cables and cords for any exposed wire and replace immediately if found
• Use only recommended replacement cables and cords
• Always aach ground clamp to the work piece or work table as close to the weld area
as possible
• Do not touch the welding wire and the ground or grounded work piece at the same
me
• Do not use a welder to thaw frozen pipes
Fumes and Gases - WARNING!
• Fumes emied from the welding process displace clean air and can result in injury or
death
• Do not breathe in fumes emied by the welding process. Make sure your breathing air
is clean and safe

Operators Manual
3
• Work only in a well-venlated area or use a venlaon device to remove welding
fumes from the environment where you will be working
• Do not weld on coated materials (galvanized, cadmium plated or containing zinc,
mercury or barium). They will emit harmful fumes that are dangerous to breathe. If
necessary use a venlator, respirator with air supply or remove the coang from the
material in the weld area
• The fumes emied from some metals when heated are extremely toxic. Refer to the
material safety data sheet for the manufacturer’s instrucons
• Do not weld near materials that will emit toxic fumes when heated. Vapors from
cleaners, sprays and degreasers can be highly toxic when heated
UV and IR Arc Rays
DANGER! The welding arc produces ultraviolet (UV) and infrared (IR) rays that can cause
injury to your eyes and skin. Do not look at the welding arc without proper eye protecon.
• Always use a helmet that covers your full face from the neck to top of head and to the
back of each ear
• Use a lens that meets ANSI standards and safety glasses. For welders under 160 Amps
output, use a shade 10 lens; for above 160 Amps, use a shade 12. Refer to the ANSI
standard Z87.1 for more informaon
• Cover all bare skin areas exposed to the arc with protecve clothing and shoes. Flame-
retardant cloth or leather shirts, coats, pants or coveralls are available for protecon
• Use screens or other barriers to protect other people from the arc rays emied from
your welding
• Warn people in your welding area when you are going to strike an arc so they can
protect themselves
Fire Hazards
WARNING! Do not weld on containers or pipes that contain or have had ammable,
gaseous or liquid combusbles in them. Welding creates sparks and heat that can ignite
ammable and explosive materials.
• Do not operate any electric arc welder in areas where ammable or explosive
materials are present
• Remove all ammable materials within 35 feet of the welding arc. If removal is not
possible, ghtly cover them with reproof covers
• Take precauons to ensure that ying sparks do not cause res or explosions in hidden
areas, cracks or areas you cannot see
• Keep a re exnguisher close in the case of re

Migomag ACDC 200
Model No MOMACDC 4
• Wear garments that are oil-free with no pockets or cus that will collect sparks
• Do not have on you any items that are combusble, such as lighters or matches
• Keep work lead connected as close to the weld area as possible to prevent any
unknown, unintended paths of electrical current from causing electrical shock and re
hazards
• To prevent any unintended arcs, cut wire back to ¼” sck out aer welding
Hot Materials
CAUTION! Welded materials are hot and can cause severe burns if handled improperly.
• Do not touch welded materials with bare hands
• Do not touch TIG gun nozzle aer welding unl it has had me to cool down
Sparks/Flying Debris
CAUTION! Welding creates hot sparks that can cause injury. Chipping slag o welds
creates ying debris.
• Wear protecve apparel at all mes: ANSI-approved safety glasses or shield, welder’s
hat and ear plugs to keep sparks out of ears and hair
Electromagnec Field - CAUTION!
• Electromagnec elds can interfere with various electrical and electronic devices such
as pacemakers
• Consult your doctor before using any electric arc welder or cung device
• Keep people with pacemakers away from your welding area when welding
• Do not wrap cable around your body while welding
• Wrap TIG gun and ground cable together whenever possible
• Keep TIG gun and ground cables on the same side of your body
Shielding Gas Cylinders can Explode
WARNING! High pressure cylinders can explode if damaged, so treat them carefully.
• Never expose cylinders to high heat, sparks, open ames, mechanical shocks or arcs

Operators Manual
5
• Do not touch cylinder with TIG gun
• Do not weld on the cylinder
• Always secure cylinder upright to a cart or staonary object
• Keep cylinders away from welding or electrical circuits.
• Use the proper regulators, gas hose and ngs for the specic applicaon
• Do not look into the valve when opening it
• Use protecve cylinder cap whenever possible
5. Proper Care, Maintenance and Repair
• Always have power disconnected when working on internal components
• Do not touch or handle PC board without being properly grounded with a wrist strap.
Put PC board in stac proof bag to move or ship
• Do not put hands or ngers near moving parts such as drive rolls of fan
MOM ACDC 200 USE AND CARE
• Do not modify the MOM ACDC 200 in any way. Unauthorized modicaon may
impair the funcon and/or safety and could aect the life of the equipment. There are
specic applicaons for which the MOM ACDC 200 was designed
• Always check of damaged or worn out parts before using the MOM ACDC 200.
Broken parts will aect the MOM ACDC 200 operaon. Replace or repair damaged or
worn parts immediately
• Store idle MOM ACDC 200. When MOM ACDC 200 is not in use, store it in a secure
place out of the reach of children. Inspect it for good working condion prior to
storage and before re-use
Noce:
• If the welder connues to work for to long, the (Protecon Indicator) on the panel
would be on, indicang that the inner temperature rise inside the welder had exceed
the designed permied temperature. At this me, stop the welding work, wait unl
the welder has cooled inside and the (Protecon Indicator) has turned o, then
connue to work again
• Cut o the power switch and Argon valve, before leaving the welding place temporarily
or aer the welding worked nished
• Welders should wear canvas work clothes and welding face shield to prevent arc light
and heat radiaon
• Put light-proof screen around the work area to prevent others inuenced by the arc
lights
• Flammable, explosive items could not be put near the welding area
• Every outlet of the welder should be connected and earthed correctly
Noce: The cover protecon degree of the MOM series Square MOM ACDC pulsed
inverter TIG welder is IP21S.When the welder is operated, do not insert nger or round
sck diameter less than 12.5mm (especially metal sck) into the welder; Do not allow to
press heavily onto the welder.

Migomag ACDC 200
Model No MOMACDC 6
Receiving
Check the equipment received against the shipping invoice to make sure the shipment
is complete and undamaged. If any damage has occurred in transit, please immediately
nofy your supplier.
The Migomag ACDC 200 TIG inverter package contains;
• MIGOMAG ACDC 200 TIG Inverter Power Source
• 4mt TIG torch MMPRO26FX4MT
• Earth cable with earth clamp 4mt
• Welding cable with twist lock electrode holder 4mt
• Gas hose
• (This) Operang Manual MOMACDC
• Regulator
Oponally available:
• Trolley Cart: Part Number - MOMTROLLEY
• Foot Control: Part Number - MOMFOOT
Please read through this owner’s manual carefully before using product. Protect yourself
and others by observing all safety informaon, warnings, and cauons. Failure to comply
with instrucons could result in personal injury and/or damage to product or property.
Please retain these instrucons for future reference.
Descripon
The ACDC 200 series is an inverter welder . This unit uses 1~Phase 240V, 50/60HZ AC
power. The ACDC series is ideal for projects or for light industrial. Sck welding carbon
steel, stainless steel, aluminium.
Unpacking
1. Remove cartons, bags or styrofoam containing the welder machine and accessories.
Check the contents with the packing list below.
ITEM QTY.
ACDC 200 Inverter Welder 1 unit
TIG Torch MMPRO26FX 4mt 1 pc
Welding cable with electrode holder 4mt 1 pc
Earth cable with earth clamp 4mt 1 pc
Gas hose & regulator 1 pc
Operator’s Manual 1 set
2. Aer unpacking unit, inspect carefully for any damage that may have occurred during
transit. Check for loose, missing, or damaged parts. Shipping damage claim must be
led with carrier.

Operators Manual
7
Specicaons
Manufactured to Australian Standard
AS60974-1: 2006
AS610003.3
Primary Voltage
240 Vac, 50/60 Hz
Rated Primary Current (I e)
15 Amps
Maximum Primary Current (I max)
34 Amps
Recommended Generator kVA
10 kVA
Rated Output 15% @ 40 Deg
Duty cycle based on 10 minute cycle me
RATING IP21S
TIG
200 Amp, 18 V, 15% duty
77 Amp, 13.1 V, 100% duty
Welding Current
20-170 Amps on the MMA
10-200 Amps on the ACDC TIG
Open Circuit Voltage
65 V
VRD 12.7 V
Mains Circuit Breaker Rang
29 Amps
Supply plug
15 Amp
Fied Supply Cable
2.5 mm2 Three Core, Heavy Duty PVC
Cooling
Fan cooled, air drawn in through front
grill.
Insulaon
Class H, 150°C Rise
Rods sizes
2.0 to 4.0mm
Tungstan sizes
1.0-3.2mm
If the supply cable is damaged it must
be replaced by the manufacturer, their
service agent or a similarly qualied
person.
Mains Circuit Breaker Rang
29 Amps
Supply plug
15 Amp
Fied Supply Cable
2.5 mm2 Three Core, Heavy Duty PVC
Power Supply Outlet (240 V) & Extension
Lead Rang
15 Amp
Dimension (mm) L X W X H
730 X 320 X 480
Weight
20 kg

Migomag ACDC 200
Model No MOMACDC 8
Mode Material
Type
Designed
Joint
Work
Thickness
(mm)
Filler Dia
(mm)
Welding
Current
(A)
Polarity
Argon
Flow
(L/min)
Tungsten
Dia (mm) Angle
DC Stainless
Steel
Vercal
Joint 1.6 -3.0
1.6-2.5
50-90
DC
Posive
8-12
1.0 12-20
degrees
V groove >3.0-6.0 70-120 1.6
25-30
degrees
X groove >6.0-12 2.5-3.2 100-150 10-14 2.4 35-45
degrees
AC
Pure
Aluminum
Alu-Mag
Alloy
Vercal
Joint 1-2.5 1.6-2.5 45-90
Posive
2-6 2-3
90
degrees
V groove 3-6 2-4 90-180 10-12 3-4
X groove 8-12 4-5 150-220 12-16 4-5
Welding regulaons parameter table (only for reference)

Operators Manual
9
Know your Welder
The MOM ACDC 200 is a digital model and can be used for MMA, ACTIG, DCTIG and PULSE
TIG. The parameters can be preset and showed, welding current and voltage can real-me
display, for easy operaon.
Factory standard: EN60974-1
STD Accessories: Tig torch and regulator
1. POWER SWITCH - When switch is in “OFF” posion no power is being supplied. When
the switch is in the “ON” posion power is supplied to the machine
2. INPUT POWER LEAD - Primery input lead that will need to be connected to 240v 15amp
supply 50/60hz
3. MACHINE SET UP FOR AC/DC
4. EARTH CABLE - DC (+) Connecon
5. WELDING TORCH - DC (-) Connecon
6. MACHINE CONTROL PANEL - For controls see page 10
For connecons see table on page 12.
2
5
6
3
4
1

Migomag ACDC 200
Model No MOMACDC 10
Front Control Panel
1. Current display - To show the preset current when seng and the welding current
when working
2. AC/DC transfer knob - Use this knob to choose the AC or DC, when AC indicator light,
means the machine is under AC mode. When DC indicator light, means the machine is
under DC mode
3. Pulse switch - Use this knob to choose whether you need the pulse, when the indicator
light, means it is under pulse mode
4. Welding mode knob - Use this knob to choose the welding mode, can be used for
MMA, HF TIG and contact-type TIG
5. Parameter knob and posive knob - Use this knob to choose the dierent procedure.
When selected a procedure, the corresponding indicator light, then use adjustment
knob to adjust the parameter
6. Adjustment knob - Use this knob to adjust the parameter, the parameter can be
showed on the display
7. Gas check knob - This machine has a gas check funcon, use knob to check the gas.
Press this knob, when the gas check indicator light is on the air valve works, that means
the gas circuit is working well. Press this knob again, the indicator will exnguish, gas
check funcon does not work
8. Voltage display - To show the preset current when seng and the welding current
when working.
9. Procedure parameter display - This part shows the procedure, when the indicator
lights, the corresponding parameter can be adjusted with the adjustment knob. See
following details:
1
2
3
457
6
8
9

Operators Manual
11
1
2
3
4
5
6
7
8
9
10
11
12
14
13
10. Thermal protecon - This machine use NTC for temperature sensing element to real
me monitoring the temperature of the crical component to protect it
11. Overvoltage protecon - When the input voltage is below or over the specied
voltage, the machine will cut o the power to protect itself unl the input voltage is
available
Installaon
1. Power requirement
AC single phase 240V, 60 HZ with a 29 amp circuit breaker is required.
DO NOT OPERATE THIS UNIT if the ACTUAL power source voltage is less than 240 volts AC
or greater than 240 volts AC.
WARNING:
• High voltage danger from power source! Consult a qualied electrician for proper
installaon of receptacle. This welder must be grounded while in use to protect the
operator from electrical shock
• Do not remove grounding prong or alter the plug in any way. Do not use any adapters
between the welder’s power cord and the power source receptacle. Make sure
the POWER switch is OFF when connecng your welder’s power cord to a properly
grounded 240 VAC, 60 HZ, Single Phase, 29 Amp input power supply
1Pre-ow Time indicator light 8 Pulse frequency indicator light (PULSE)
2 Hot start current indicator light (MMA) 9Background current indicator light (PULSE)
3Ignion current indicator light (4T) 10 Minus grade me indicator light (4T)
4Up Slope me indicator light (4T) 11 Arc stopping current indicator light (4T)
5 Welding current indicator light (CC) 12 Gas delay me indicator light
6Peak current indicator light (PULSE) 13 Clear area width (ACTIG)/ arc force (MMA)
7 Pulse Rao indicator light (PULSE) 14 AC frequency (ACTIG)

Migomag ACDC 200
Model No MOMACDC 12
2. Extension cord
We do not recommend an extension cord because of the voltage drop they produce. This
drop in voltage can aect the performance of the welder. If you need to use an extension
cord, we recommend you check with a qualied electrician and your local electrical codes
for your specic area. Do not use an extension cord over 25 . in length.
3. MMA mode connecon method
TABLE 1.
4. TIG mode connecon method
5. Foot control pedal
Foot
Control

Operators Manual
13
6. Input connecon method
WARNING!
EXPOSURE TO A WELDING ARC IS EXTREMELY HARMFUL TO THE EYES AND SKIN! Prolonged
exposure to the welding arc can cause blindness and burns. Never strike an arc or begin
welding unl you are adequately protected. Wear ame-proof welding gloves, a heavy long
sleeved shirt, trousers without cus, high topped shoes, and an ANSI approved welding
helmet.
Operaon
WARNING!
High voltage danger from power source! Consult a qualied electrician for proper installaon
of receptacle at the power source. This welder must be grounded while in use to protect the
operator from electrical shock. If you are not sure if your outlet is properly grounded, have
it checked by a qualied electrician. Do not cut o the grounding prong or alter the plug in
any way and do not use any adapter between the welder’s power cord and the power source
receptacle. Make sure the POWER switch is OFF then connect your welder’s power cord to a
properly grounded 240 VAC, 60 HZ, single phase, 29 amp power supply.

Migomag ACDC 200
Model No MOMACDC 14
1. MMA: DC Sck arc welding
Set the (Welding mode knob) to “ ” adjust the (Adjustment knob) to change the welding
current.
The hot start current “ ” and arc force current “ ”can be adjusted at this mode
according to the welding materials.
NOTICE: If set (Welding mode knob) to “ ” just the hot start current “ ” and arc
force current “ ”can be adjusted.
Step 3: Press this knob, choose
MMA, the current display shows
the pre-set current，voltage
display shows the open circuit
voltage.
Step 2: Press this knob to
choose the parameter
Step 1: Use this adjustment to
adjust the parameter selected
on Step2
Step 3: Use this adjustment to
adjust the parameter selected
on Step2
Step 2: Press this knob to
choose the parameter
Step 1:Press this knob, choose
TIG
2. TIG:

Operators Manual
15
2.1 DC TIG welding
Set the (Welding mode knob) to “ HF ignion li arc” and (AC/DC transfer knob) to
DC“ ” , would enter into DC TIG welding mode. In this mode to adjust by “Parameter
knob” ”Parameter posive knob”:
( ) to adjust the Pre-ow me
( Ic ) to adjust the welding current;
( ) to adjust the stopping gas delay me;
Choose (2step, 4step switch) set on dierent gears to choose the welding method “2 step ”
“four step (See the details introducon is “Technical Instrucon”)
2.2 DC pulse TIG welding
Set (Welding mode knob)to “TIG ” , (AC/DC transfer knob) to “DC ” , (Pulse
switch) set on “Pulse” would enter into the by “Parameter knob” ”Parameter posive knob”:
() to adjust the Pre-ow me;
( ) to adjust the pulse peak current;
( ) to adjust the Pulse width;
( ) to adjust the Pulse frequency;
() to adjust the Pulse Background current;
() to adjust the stopping gas delay me;
2.3 Trigger Mode Control Buon (HF TIG and LIFT TIG Mode only)
The trigger mode control is used to switch the funconality of the torch trigger between 2T
(normal), and 4T (latch mode).
2.3.1 Remote Control Operaon
When the remote control terminal is connected, you adjust the middle knob on front panel
to set the max value of remote control (Eg. If you set it as 150A, the max value you can reach
by remote torch will be 150A). Aer you nish the seng for 5s, the front display will show
the real output set by the remote torch.

Migomag ACDC 200
Model No MOMACDC 16
2.3.2 2T Normal Mode
In this mode, the torch trigger must remain depressed for the welding output to be acve.
Press and hold the torch trigger for Ignion in the 2T mode, there is the funcon for up slope
and down slope funcon it is set by mer on the funcon panel of the machine by the arrow
buons by scrolling (5 on page 10) to the up slope light when it is laminated on the panel
then you can adjust by item (6 on page 10) me is from 0-15sec when you want to set the
down slope me, it’s the same pushing the arrow buon unl the light is laminated on down
slope and use item (6 on page 10) to set the me it’s from 0-15 sec.
When welding the up slope will weld for the me set and for down slope me will run from
when your release the trigger on the torch. Aer you nishing welding the down slope me
will start unl the me period is nished and then if post gas will run for the me set and
then the welding arc will stop welding.
2.3.2 4T Latch Mode
This mode of welding is mainly used for long welding runs to reduce operator fague. In this
mode the operator can press and release the torch trigger and the output will remain acve.
To deacvate the power source, the trigger switch must again be depressed and realized,
thus eliminang the need for the operator to hold the torch trigger.
Note that when operang in GTAW (HF and LIFT TIG modes), the power source will remain
acvated unl the selected down slope me has elapsed.
NOTE: This Up Slope operates in (4T) TIG modes only and is used to set the me for the weld
current to ramp up, aer the torch trigger switch has been pressed then released, from
Inial Current to High or BASE current.

Operators Manual
17
2.4 AC TIG welding
Set (Welding mode knob) to “TIG HF ignion li arc” and (AC/DC transfer knob) to
“AC ” would enter into AC TIG welding mode. Then to choose by “Parameter knob”
”Parameter posive knob”:
() to adjust the Pre-ow me;
(Ic) to adjust the welding current
( ) to adjust the stopping gas delay me;
() to adjust the clear area width;
() to adjust the AC square wave frequency;
Choose (2step, 4step switch) set on dierent gears to choose the welding method “2 step
” “four step ” (See the details introducon is “Technical Instrucon”)
2.5 AC pulse TIG welding
Set (Welding mode knob) to “TIG ” and (AC/DC transfer knob) to “AC
”,
(Pulse switch) set on “Pulse” would enter into AC pulse TIG welding mode. Then to choose
by “Parameter knob” ”Parameter posive knob”:
() to adjust the Pre-ow me;
( ) to adjust the pulse peak current;
() to adjust the Pulse width;
() to adjust the Pulse frequency;
( ) to adjust the Pulse Background current;
()to adjust the stopping gas delay me;
() to adjust the clear area width;
() to adjust the AC square wave frequency;
Choose (2step, 4step switch) set on dierent gears to choose the welding method “2 step
” “four step ” (See the details introducon is “Technical Instrucon”)